Over Time,natural Selection Eliminates Individuals with Detrimental Phenotypes from a Population.However,there

question 32

Multiple Choice

Over time,natural selection eliminates individuals with detrimental phenotypes from a population.However,there are several examples in the human population in which harmful genetic polymorphisms are maintained.Why?

• A)Individuals with two wild type alleles have advantages over individuals carrying the harmful allele.
• B)Individuals with two harmful alleles have advantages over individuals carrying one copy of the harmful allele.
• C)Homozygous individuals have some other advantage over individuals with two wild type alleles.
• D)Heterozygous individuals have some other advantage over individuals with two wild type alleles.

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Definitions:

Presbyopia

An age-related condition in which the eye's lens loses its ability to focus, making it difficult to see objects up close.

Iritis

Inflammation of the iris, the colored part of the eye, which can cause pain, light sensitivity, and vision problems.

Color Blindness

A deficiency in the way someone sees color, making it difficult to distinguish between certain colors or shades.

Contrast Sensitivity

The ability to distinguish between variations in light and dark, a critical aspect of vision that affects how well one can perceive fine distinctions in brightness or textures.